Characterization of Microstructural and Morphological Properties in As-deposited Ta/NiFe/IrMn/CoFe/Ta Multilayer System

Öksüzoğlu, Ramis Mustafa; Saraç, Umut; Yıldırım, Mustafa; Çınar, Hakan

doi:10.1016/j.jmst.2013.10.024

Cited by 6 publications

(2 citation statements)

References 25 publications

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“…If dipolar ferromagnetic interactions are dominant, then H j and MR max decrease with an increase in spacer thickness. If the standard deviation of the interlayer roughness is no more than 0.3–0.5 nm [ 10 , 11 ], then the RKKY interactions can be dominant. In this case, H j changes periodically with an increase in the spacer thickness, enabling an SV with H j ≈ 0 and a large MR max to be obtained [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

A Spin Valve-Based Rhombus-Shaped Micro-Object Implementing a Full Wheatstone Bridge

Milyaev,

Naumova,

Germizina

et al. 2024

Sensors

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Spin valves with a synthetic antiferromagnet were fabricated via magnetron sputtering. It was shown that the fabricated spin valve layers had a perfect microstructure and smooth interfaces, and therefore, an RKKY interaction dominated in the coupling of the ferromagnetic layers separated by a copper spacer. Rhombus-shaped micro-objects were fabricated from a single spin valve film. The thermomagnetic treatment procedure was found to form unidirectional anisotropy in the micro-object such that the values of the exchange bias fields in the rhombus’ nonparallel sides were opposite in sign. For the CoFeNi/Ru/CoFeNi synthetic antiferromagnet, we determined the differences between the ferromagnetic layer thicknesses at which the thermomagnetic treatment formed the same exchange bias all over each rhombus’ side. We also fabricated a sensor element in which each side of the rhombus was the shoulder of a Wheatstone bridge. After the thermomagnetic treatment procedure, each shoulder worked as an active magnetosensitive element, enabling the device to operate as a full Wheatstone bridge. The sensor output exhibited a step shape, high sensitivity to field changes, and significant magnetic hysteresis. Such characteristics are suitable for switching devices.

show abstract

Section: Introductionmentioning

confidence: 99%

A Spin Valve-Based Rhombus-Shaped Micro-Object Implementing a Full Wheatstone Bridge

Milyaev,

Naumova,

Germizina

et al. 2024

Sensors

View full text Add to dashboard Cite

show abstract

“…If dipolar ferromagnetic interactions are dominant, then H j and MR max decrease with an increase in spacer thickness. If the standard deviation of the interlayer roughness is no more than 0.3-0.5 nm [10,11], then the RKKY interactions can be dominant. In this case, Hj changes periodically with an increase in the spacer thickness, enabling an SV with Hj ≈ 0 and a large MR max to be obtained [12].…”

Section: Introductionmentioning

confidence: 99%

Spin Valve-Based Rhombus-Shaped Microobject Implementing Full Wheatstone Bridge

Milyaev,

Naumova,

Germizina

et al. 2023

Preprint

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Spin valves with a synthetic antiferromagnet were fabricated by magnetron sputtering. It was shown that the fabricated spin valves had perfect microstructure of layers and smooth interfaces, therefore RKKY interaction dominates in coupling of ferromagnetic layers separated by a copper spacer. Rhombus-shaped microobjects were fabricated from a single spin valve film. The thermomagnetic treatment procedure was found, to form unidirectional anisotropy in the microobject so, that the values of the exchange bias fields in the rhombus’ nonparallel sides were opposite in sign. For the synthetic antiferromagnet CoFeNi/Ru/CoFeNi the difference between ferromagnetic layers thicknesses was found, at which the thermomagnetic treatment forms the same exchange bias all over the rhombus’ side. The sensor element was fabricated in which each side of the rhombus was a shoulder of a Wheatstone bridge. After the thermomagnetic treatment procedure each shoulder worked as an active magnetosensitive element, thus the device operated as the full Wheatstone bridge. The sensor output has the shape of a step, high sensitivity to field change and significant magnetic hysteresis. Such characteristics are suitable for switching devices.

show abstract

Bath temperature-dependent structural properties, coercive force, surface morphology and surface texture of electrochemically grown nanostructured Ni–Co/ITO thin films

2020

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Characterization of Microstructural and Morphological Properties in As-deposited Ta/NiFe/IrMn/CoFe/Ta Multilayer System

Cited by 6 publications

References 25 publications

A Spin Valve-Based Rhombus-Shaped Micro-Object Implementing a Full Wheatstone Bridge

A Spin Valve-Based Rhombus-Shaped Micro-Object Implementing a Full Wheatstone Bridge

Spin Valve-Based Rhombus-Shaped Microobject Implementing Full Wheatstone Bridge

Bath temperature-dependent structural properties, coercive force, surface morphology and surface texture of electrochemically grown nanostructured Ni–Co/ITO thin films

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